baber/WOPTO huggingface dataset:
Patent GB-1270388-A (GB)
Title: Improvements in or relating to detectors of smoke and the like
Inventor: BARNES ALAN GEORGE
IPC: G08B17/103
Filed: 1968-06-28
Abstract: 1,270,388. Transistor pulse circuits. GRAVINER (COLNBROOK) Ltd. 22 July, 1969 [28 June, 1968], No. 30871/68. Heading H3T. [Also in Division G1] In an apparatus for detecting smoke, in the absence of smoke, resistor 78 of the detector circuit 17 is adjusted to make the outputs from the photo-cells resulting from a pulsed light source 18, equal but, as the output circuits are dissimilar, positive pulses are produced and these are amplified by the transistors 82, 84, 86, 88. Between energizing pulses for the source 10 transistor 20 is non-conducting. Therefore transistor 98 is conducting, line 94 is at the same potential as line 38, and transistor 96 is hence unaffected by the amplified output from transistor 88 between light source pulses. If this output exceeds a predetermined value, transistor 96 and hence transistor 103 are switched off and transistor 102 is rendered conducting. Thus, a pulse of charge is applied to capacitor 104 which is thereby maintained at a sufficient charge level to reverse-bias diode 112 and hold transistor 114 conducting. Transistor 116 is therefore non-conducting, holding transistor 120 conducting and energizing relay coil 122. When smoke obscures the path to detector 12 beyond a predetermined level the amplifier pulses no longer switch off transistor 96. Transistor 103 conducts and transistor 102 does not. Thus capacitor 104 discharges, resulting in coil 122 becoming de-energized to produce a warning signal. This warning signal is also actuated as a result of component failure, as the whole of the detecting circuit is active to maintain the relay coil 122 energized. If the push-button 126 of a test relay 124 is depressed, resistor 76 is shortcircuited and the amplitude of the pulses applied to transistor 82 is thereby decreased, resulting in relay coil 122 being de-energized if the circuit is operating correctly.
Patent GB-1476511-A (GB)
Title: Process for the purification of mixtures of fatty acids or  of their esters
IPC: C07C57/12
Filed: 1974-07-12
Abstract: 1476511 Purification of unsaturated fatty acids or esters HENKEL & CIE GmbH 12 July 1974 [14 July 1973] 30884/74 Heading C2C Fatty acid acids or esters are purified from fractions with multiple unsaturation by heating in the presence of montmorillonite with a specific surface of more than 150 m.<SP>2</SP> per gram to 110‹ to 210‹ C., and then distilling to separate the mixture. Oleic acid or esters thereof or natural mixtures such as fatty acids of olive, palm and groundnut oil may be used. 2-25% by weight of montmorillonite may be used, and the process may be continuous. Examples describe the treatment of methyl esters of oleic acid and linoleic acid with minor amounts of saturated fatty acids (14-18 C).
Patent GB-322295-A (GB)
Title: An improved means for tinting liquids
IPC: D06F93/00
Filed: 1928-10-25
Abstract: 322,295. Crump, L., and Mitford, E. R. Oct. 25, 1928. Washing-blue. - Means for tinting liquids comprise a number of sheets of paper having colouring matter applied thereto and bound up in book form with the sheets joined in pairs along one or more edges and the colouring matter applied to one or both of the inturned surfaces only of each joined pair of sheets. One sheet only of each pair may be secured within the hinge of the book. The invention is particularly applicable to tinting water with laundry blue. As shown the colouring substance 4 such as ultramarine may be spread over one half of one face 3 of a sheet of paper and the paper folded so that the uncoated half lies over the coated half and encloses the colouring material. A number of such folded sheets are then assembled in book form and the sheets may be perforated at 5 to facilitate tearing from the book. The sheets may also be perforated transversely at 6 so that a portion only may be used. A material that will effervesce on contact with water may be mixed with the colouring substance to faciltate its disintegration or dispersion in the water. The paper may be coated or impregnated with a protective wax or varnish before being coated with the colouring substance so that the latter is not absorbed by the paper. A water soluble adhesive may be mixed with the colouring substance and made up into a water soluble paste for coating the paper, or the colouring substance may be applied as a dry powder and covered with a film of water soluble material.
Patent GB-287205-A (GB)
Title: Improvements in boilers for domestic hot water supply
IPC: F24C13/00
Filed: 1926-12-07
Abstract: 287,205. Owens, J. S. Dec. 7, 1926. Open. fireplaces; closed solid-fuel stoves; boilers, arrangement of; grates; canopies. - Relates to boilers in which the fire space 3 is so arranged that the fuel is prevented from contact with the boiler 8, 39, on one or more sides by a vertical or steeply-inclined grate 15, 41, the upper end of which may be supported by the boiler. The heating flue leading to the rear uptake 9, 48, is bounded on its lower side by the ashpan 28 and on the upper side by the lower edge of the boiler at or about the level of the grate 13, 43. By altering the position of the damper 36 or, in the boiler, Fig. 6, the ashpan controlling the draught to the rear flue and that of the canopy 21 with plate 25, Fig. 2, the passage of the bulk of the air through the fuel may be varied, in one case entering at the front and passing out through the back grate under the boiler, or being more or less directly diverted to the top flue or entering the grate at the bottom and back of the fire, passing out through the front and top.
Patent GB-672631-A (GB)
Title: Improvements in rotor windings for electric commutating machines
IPC: H02K3/16
Filed: 1950-12-20
Abstract: 672,631. Windings for dynamo-electric machines. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET. Dec. 20, 1950 [Dec. 27, 1949], No. 30994/50. Class 35. In a commutated winding having split throw coils, as shown in Fig. 1, where one coil-side is split into parts 2, 3 in different slots, the equalizing connections 5 are connected at the commutator end of the winding. As shown in Fig. 2, the equalizing connections 15, which lie underneath the main split throw windings 12, are soldered into the bottoms of slots in the commutator risers 14 and are separated from the commutator pressure ring 17 by insulation 16.
Patent GB-1392643-A (GB)
Title: Digital data recorders
IPC: H02P6/16
Filed: 1972-07-03
Abstract: 1392643 Recording digital data SIEMENS AG 3 July 1972 [1 July 1971] 31117/72 Headings G4C and G5R A digital data recording arrangement includes a motor arranged to drive a recording medium, e.g. a magnetic tape, the motor being a D.C. motor having electronic commutation means, means arranged to produce recording pulses, and synchronizing means to synchronize the production of the recording pulses with the speed of the motor by controlling the producing means in accordance with signals generated by the commutation means or at a winding of the motor. The motor has stator windings L1-L4 energized by transistors T1-T4 in response to rotor position signals, e.g. from Hall generators H1, H2. The position signals are also fed to operational amplifiers K1, K2 acting as comparators. The amplifiers feed an exclusive-OR gate G to produce glow pulses per revolution. These pulses are used to control recording in order to compensate for motor speed variations. In a modification, Fig. 3 (not shown), signals are derived via diodes from the stator windings and are fed via amplifiers K1, K2 and gate G as above.
Patent GB-180292-A (GB)
Title: Improved process for converting silver prints into colour pictures
IPC: G03C5/48
Filed: 1921-11-23
Abstract: 180,292. Akt.-Ges. f³r Anilin-Fabrikation. May 17, 1921, [Convention date]. Toning.-For converting silver prints into coloured pictures the silver print after treatment, known in itself, with a neutral solution of a quinone of the benzene or naphthalene series in the presence of a chloride or a bromide is washed, and dyed with basic dyestuffs. The prints treated should be weak owing to the intensification produced. In an example, the print is treated for 10 minutes with a solution of benzoquinone, or 1 : 2 naphthoquinone, and potassium chloride, sodium chloride or potassium bromide, washed for five minutes, immersed in a solution of brilliant safranine and glacial acetic acid, washed for five minutes, cleared in a solution of sodium bisulphide, and washed again. The silver remaining in the picture may be eliminated in known manner. Specification 10258/07 is referred to.
Patent GB-716479-A (GB)
Title: Process for compacting and rapid plastic stiffening or consolidation of various types of earthy materials
IPC: C09K17/12
Filed: 1952-12-11
Abstract: 716,479. Hardening soil. KEIL, K. F. Dec. 11, 1952, No. 31409/52. Class 68(1) Soils of low binding power such as sand, gravel or loess are consolidated by mixing the soil with up to 30 per cent of its weight of clay or bentonite of high binding power, with up to 12 per cent of its weight of water glass and with one or more hydratizing chemicals such as sodium carbonate or ammonium phosphate, sufficient water being added to form a pasty mass which hardens in a short time to an insoluble, plastic mass. The treated soil can be used as an impermeable packing for coffer dams or embankments, the paste being poured into the space to be filled to harden in situ. To provide a consolidated surface for a road, the materials are sprayed and scattered over the surface and raked in to the required depth.
Patent GB-815958-A (GB)
Title: Metallurgical process for treating steel
IPC: B21C29/00
Filed: 1957-10-08
Abstract: 815,958. Altering physical properties. SALLE STEEL CO. Oct. 8, 1957 [Oct. 22, 1956], No. 31416/57. Class 83 (4). Working at specified temperatures.-A metallurgical process for treating hot rolled non- austenitic steel having a pearlitic structure in a matrix of free ferrite comprises heating the steel to above its transformation range while in contact with a material for diffusion transfer of elements into the surface of the steel, cooling the steel, and subsequently making a reduction in the cross-section of the steel by working the steel at a temperature within the range of 200‹ F. to the lower critical temperature for the steel composition. The diffusion transfer includes carburizing, nitriding, cyaniding and carbonitriding. After carburizing, the steel is either (1) quenched rapidly to room temperature followed by reheating to within said temperature range for the reduction step, or (2) air cooled to ambient temperature and then reheated to the required temperature for reduction, or (3) quenched or air cooled to the required temperature for reduction preferably in the range of 460‹ F. to the lower critical temperature. Prior to carrying out the diffusion transfer step the hot rolled steel is descaled. by pickling in sulphuric acid and limed to prevent rusting. Specifications 761,150 and 761,151 are referred to.
Patent GB-1000223-A (GB)
Title: Improvements in or relating to electrical connector sockets
IPC: H01R13/11
Filed: 1961-08-31
Abstract: 1,000,223. Two-part couplings. W. A. RICHARDS. (U. Tuchel). Aug. 31, 1961, No. 31441/61. Heading H2E. A longitudinally slit contact socket of non- circular cross-section is shaped from resilient sheet metal so as to engage a rigid circular pin tangentially at three circumferential points. As shown in Figs. 1 and 3, the socket 1 is of oval or triangular cross-section, the side walls being divided into pairs of tongues 4 by transverse slits. These tongues do not meet, except in the case of the pair nearest to the insertion end, when they overlap to form a closed ring which may be flared outwards. Fig. 3 shows additional resilient tongues 14 which are bent outwardly and these may serve to anchor the socket in an insulating panel.
Patent GB-1193083-A (GB)
Title: Filter Elements
Inventor: TOOLE KENNETH JAMES
IPC: C08G18/10
Filed: 1966-07-13
Abstract: 1,193,083. Filter element. AULT & WIBORG Ltd. 12 July, 1967 [13 July, 1966], No. 3146/ 66. Headings B1D and B1T. [Also in Divisions C3] A fluid filter cartridge having at least one sealing ring formed from an impermeable elastomeric polymeric material containing urethane groups is formed by immersing one end of an annular resin bonded pleated paper filter element in a substantially anhydrous polymerisable mixture comprising at least one isocyanate containing at least two isocyanate groups in the molecule, at least one organic compound containing a plurality of hydroxyl groups, and a catalyst which is or comprises a compound of lead (II), tin (II), tin (IV) or mercury (II), which compound contains at least one organic group in the molecule, and allowing polymerisation of said mixture to take place in contact with said end of the paper filter element. The polymerisable mixture may also contain a secondary or tertiary amine a particulate clay filler, dioctyl phthalate as a plasticiser and powdered P.V.C. The filter cartridge may be used in air, fuel, or lubricating oil filters.
Patent GB-1407621-A (GB)
Title: Fluid gauges for measuring small variations in dimensions of  objects
IPC: G01B13/00
Filed: 1972-07-05
Abstract: 1407621 Fluid operated gauges EDINBURGH UNIVERSITY COURT OF 4 Oct 1973 [5 July 1972] 31448/72 Heading G1M An air nozzle 10 is biased by a resilient element such as a spring 13, Fig.2, towards a surface 20 to be gauged by reading back pressure 27. The nozzle is part of a centrally pivoted beam 12, and a bellows 15 is provided to oppose the action of the resilient element and allow it to be of a more robust construction and also to apply a feedback force to the nozzle by pushing on cords 21 fastened at one end 26 to the beam and at the other end to a fixed but adjustable block 22. A spiral spring (not shown) inside the bellows serves to keep the bellows extended and the cords taut and the force exerted on the beam at 26 is varied as the block 22 is adjusted so that the degree of feedback is also made variable. In operation the rise in back pressure in the nozzle 10 expands the bellows 15 and tilts the beam 12 to an extent determined by the cross-section of the bellows and the spring 13. These factors, together with the geometry of the beam 12 reduce the movement of the nozzle and the sensitivity of the device but increase its useful range and the linear range. The diameter of the nozzle 10 can also be made very small. In the embodiment of Fig.4 the nozzle 10 is fixed directly to the bellows 15 and is supported by a flexible diaphragm 47 and a pair of arcuate leaf-springs 54, 54 bear at their free ends through blocks 55, 55' on the upper surface of a disc 48. In operation, air so supplied to space 60 and exits via the nozzle 10, back pressure causing the diaphragm to deflect against restoring force of the springs which is adjustable by rotating a cover 58 and moving the abutment positions of screws 57. Suitable external pressure measuring or monitoring equipment is connected to pipe 19, and a flexible spider 59 guides the axial movement of the nozzle. The degree of feedback which governs the linear range and sensitivity is adjusted by altering the unsupported length and hence stiffness of leaf-springs 54, 54'. The gauge may be used on soft materials since it operates on low air pressures and may be adapted to measure sheet thickness or bore diameters.
Patent GB-1057337-A (GB)
Title: Novel 3-substituted-androst-11-ones and processes for their preparation
IPC: A61K38/00
Filed: 1965-05-20
Abstract: Novel 3 - substituted - 16 - bromo - 17-hydroxy-androstan-11-ones of the general formula <FORM:1057337/C2/1> wherein R1 represents H or an organic acyl radical are obtained in a process in which the corresponding 17-keto compound is selectively reduced by reaction with an alkali metal borohydride to give the corresponding 17-hydroxy derivative.  The 3 - substituted - 16 - bromoandrosta-11,17-dione starting material may be prepared by treating the corresponding 3-substituted-androsta-11,1 -dione with bromine in the presence of hydrobromic acid.
Patent GB-299621-A (GB)
Title: Improvements in wheel hubs
IPC: B60B27/02
Filed: 1927-11-23
Abstract: 299,621. Pullin, C. G., and Groom, S. L. Nov. 23, 1927. Spokes, securing.-In a cycle &c, hub, the spoke flanges 4 are seated on reduced end portions 3 of the barrel 2 which form abutments for the outer bearings 8. The inner bearings 10 are clamped between a shoulder 12 on the sleeve 11 and nuts 13, 14. Packing washers clamped against the outer ends of the bearings 10 each comprise a plain disc 15 and a dished disc 16 embracing a ring 18 of leather, felt, &c. which is pressed into close contact with the sleeve 6 of the hub-flange 4 on adjustment of the nuts 13, 14.
Patent GB-948280-A (GB)
Title: Improvements in and relating to containers
IPC: B65D25/00
Filed: 1961-09-01
Abstract: 948,280. Boxes of plastics material. R. MAUSER, A. MAUSER, and P. MAUSER. Sept. 1, 1961 [Sept. 24, 1960; Oct. 1, 1960], No. 31488/61. Heading B8P. A stackable box of synthetic plastics material has a flange 9 on which an adjacent box may be seated, a hand-grip 10 at the rear, converging front walls 7 of trapezium shape leading to a handle strip 5 having a label recess and overlying an inclined wall 6, and a base formed with longitudinal ribs. In a modification, Fig. 7, the box has integral strengthening members of triangular cross-section, at its front corners, each member being closed at the top but open at the bottom, and bounded by an inner wall 11. Again, the side walls of the box may be formed with vertical ribs or with a combination of transverse ribs and buttresses, Figs. 9-13 (not shown).
Patent GB-903471-A (GB)
Title: Improvements in sequential and simultaneous sequential methods of colour cinematography and television
IPC: H04N11/00
Filed: 1958-10-02
Abstract: 903,471. Colour television. HUET, J. Oct. 2, 1958 [Oct. 2, 1957], No. 31514/58. Class 40 (3). [Also in Group XX] A four-colour additive system is used in cinematographic processes, the separate colour components being derived as shown in Fig. 5. The spectrum range is represented in the form of a spiral, beginning at 380 mÁ on the - y axis, and ending at 740 mÁ on the +y axis. The wavelengths 440 mÁ and 560 mÁ are oriented so as to lie on the x axis. Thus the entire spectrum is distributed as follows:- 1st quadrant: violet (380-440 mÁ) + red (620-680 mÁ) 2nd quandrant: blue (440-500 mÁ) + dark red (680-740 mÁ) 3rd quadrant: green (500-560 mÁ) 4th quadrant: yellow (560-620 mÁ) Each of the four colour elements consists of a " basic " or " fundamental " colour constituent, plus at least one " subsidiary " colour constituent. The " basic" constituent is one having a dominant wavelength in the blue, green, yellow, or red bands, as defined by the scheme of Fig. 5, or alternately an additive mixture of the two colour bands in either the 1st or 2nd quandrants. The " subsidiary " constituent is chosen from the quadrant on either side (or both sides) of the quadrant containing the " basic " constituent. The four elements may conveniently be provided in the form of four sets of colour filters, for splitting up the white light at the " taking " stage. Each element may consist of a plurality of sectors, one sector being the " basic " constituent and the other(s) the " subsidiary " constituent(s). Alternatively, each element may consist of a single complex colour component having the necessary colour characteristics, and examples of suitable dyes are given. The four separate colour images are formed, two by two, each pair being recorded simultaneously within one picture frame. The two colour images on one frame are followed by the remaining two on the next frame, forming a so-called " simultaneoussequential " system. It is stated that this system may be operated at the normal black- and-white image repetition rate without objectionable colour flicker. For projecting the pictures, each of the four positive pictures may be coated with the appropriate dye, which forms a colour filter similar to that used when taking the corresponding negative. The principle may be applied to television by using a system of four-colour filters according to the invention at both the transmitting and receiving ends. The Specification sets out and discusses a theoretical justification for the selection of the colour ranges forming the particular fourcolour system of the invention, based on the physiology of colour vision and colour perception.
Patent GB-1515305-A (GB)
Title: Cavity closure devices
IPC: E06B1/00
Filed: 1975-09-16
Abstract: 1515305 Cavity closers RADWAY PLASTICS Ltd 16 Sept 1975 [17 July 1974] 31605/74 Heading E1B A cavity closer comprises an elongate resilient member 1 of skeletal form for insertion in the cavity, a cover plate having formations 6 for engaging flanges 5 on the member 1 to close the cavity and a key member 16 for insertion in the filling piece to tie it to the wall. Ties may additionally engage with the cover plate in T-section grooves. Galvanised wire keying members may secure both the cover plate and the filling member. The cover plate may be stepped to seat a window frame and may include a distance piece to provide an adjustable seating.
Patent GB-1364487-A (GB)
Title: Optical position measurement apparatus
IPC: G01B9/02
Filed: 1971-07-06
Abstract: 1364487 Optical position determination PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 6 July 1971 [9 July 1970] 31668/71 Heading H4D [Also in Division G1] In an apparatus for determining the position of an object 13, to which is attached a radiation detection system 10, a radiation beam incident on the object contains two orthogonally polarized monochromatic coherent components having different frequencies # 1  and # 2 , # 1  - # 2  being small compared with # 1  and # 2 , which are derived from two oppositely circularly polarized components of the same frequency by a polarization-sensitive system 3, 4. As shown, the distance x between a slit in partition 13 and the optical axis AB of the system is measured. A laser 1 inside a magnetic coil produces the two circularly polarized components # 1 , # 2 . A reference beam, produced by an isotropic beam-splitting mirror 2, passes through a plane polarizer 7 before incidence on a photocell 9, where a reference signal is produced. The polarization-sensitive system comprises a #/4 plate 3 and a Wollaston prism 4. A moving interference pattern is formed at the slit 13 after passage of the components through a linear polarizer 11, resulting in an A.C. output from the photocell 12. The phase of this output relative to the reference signal is measured in a phase detector 14 to give the inter-fringe position of the slit. The whole number of fringes between the slit and the optical axis is measured using a counter. To determine the position of an object in two perpendicular directions a further Wollaston prism rotated by 90 degrees with respect to the first one is provided together with a second detection system having its slit perpendicular to the first. To separate the information regarding the two perpendicular directions, two light sources having different mean wavelengths, or having the same mean wavelength with two different difference frequences, may be used. In another embodiment for measuring distances with respect to two perpendicular directions (Fig. 2, not shown) the initial laser beam is divided into two mutually perpendicular planar sub-beams. Each sub-beam has two orthogonally polarized components at frequencies # 1  and # 2 . This spatial separation is effected by a combination of polarisation sensitive prisms (24-30). The two sub-beams converge on a polarisation-separating assembly (33, 34) where they are divided according to their polarisation planes and received by two photocells (35, 36) Each photocell produces an output representing displacement of the corresponding photocell system in one of the x, y directions, which is compared with a reference signal. The faces of the polarisationseparating assembly (33, 34) adjacent the two photocell systems may be provided with gratings having the same period as the interference patterns produced by the sub-beams.